A Burmese ruby and diamond ring
A Burmese ruby and diamond ring, the oval-shaped ruby is set baguette-shaped shoulder diamonds and circular-cut diamonds to the openwork gold and platinum mount, engraved R2.40.
Accompanied by report number 12008 dated 17th November 2015 from The Gem and Pearl Laboratory, London stating that the rectangular cushion-shaped ruby shows no evidence of heat treatment. Origin opinion: Burma.